A finely carved white jade 'marriage bowl' mark and period of Qianlong

the white stone with a few opaque whiter inclusions and scattered russet accents, carved as a wide basin with deep rounded sides, the exterior carved in low relief with scrolling Indian lotus with projecting central stamens, the interior with two swallows elegantly turning by a large spray of prunus, the sides flanked by D-form ear-handles finely reticulated with a coiling qilong dragon grasping sprays of nandina berries and asters, the base with four short splayed bracket feet and finely incised with a four-character mark

Spink & Son Ltd., London, circa 1960s.